A block of mass 
is placed on a rough horizontal surface having coefficient of friction 
. The magnitude of external horizontal force applied on the block gradually increases. The force exerted by the block on the surface is N. Then match the following.
Column-I | Column-II | ||
(A) | The magnitude of N | (P) | is less than or equal to |
(B) | N is less than equal to | (Q) | Decrease gradually |
(C) | The angle made by with horizontal. | (R) | |
(D) | The angle made by with Verticle. | (S) | Increases gradually |
; 
; 
; 
Text Solution
Verified by ExpertsC
As 
As the 
increases f increases so 
increases
As the 
increases f increases so 
move towards f so angle made by N with horizontal decreases gradually
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